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1.3. rezultāts no 85.
96. lappuse
The present ITU plan for the allotment of high frequencies to aeronautical services throughout the world was established by a special Aeronautical Conference in 1948/49 , it was brought into force progressively throughout the world ...
The present ITU plan for the allotment of high frequencies to aeronautical services throughout the world was established by a special Aeronautical Conference in 1948/49 , it was brought into force progressively throughout the world ...
152. lappuse
At the present time , VHF planning in high density areas such as Western Europe , even with the present 50 kc / s channel separation , has become extremely difficult and it is virtually impossible to satisfy new requirements .
At the present time , VHF planning in high density areas such as Western Europe , even with the present 50 kc / s channel separation , has become extremely difficult and it is virtually impossible to satisfy new requirements .
337. lappuse
In the early chapters of volume 1 the basic material is presented in the light of the application rather the theory ... frequencies ( 1000 Mc / s upwards ) valves are at present the obvious choice and usually the only possibility .
In the early chapters of volume 1 the basic material is presented in the light of the application rather the theory ... frequencies ( 1000 Mc / s upwards ) valves are at present the obvious choice and usually the only possibility .
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